Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29f7d6664bbef7f…

MALICIOUS

PDF

38.7 KB Created: 2020-05-22 18:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b74797fd4719204d4984a5f2d6f3b671 SHA-1: 359eef1b6e699de3a88c25d5d1ffc83c305fe5e4 SHA-256: f29f7d6664bbef7f680c435c86074e649086177c946c0cc2cb7945713d492371
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of external links to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly supports the malicious verdict. No scripts were extracted from this sample, limiting the analysis of direct execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://thismaycomeinhandy.com/uploads/1/3/0/6/130604632/130604632.html#introduccion+a+la+metalurgia+fisica
    • http://theamericanthoroughbred.com/uploads/1/3/0/7/130776607/7589083.pdf
    • http://meistergramemb.com/uploads/1/3/0/4/130476493/e6101.pdf
    • http://indoboheme.com/uploads/1/3/1/3/131383720/3203426.pdf
    • http://atbtechnology.com/uploads/1/3/0/4/130490876/lojugib.pdf
    • http://leoemercer.com/uploads/1/3/1/4/131453046/gofipuwa_winuvoduwop.pdf
    • http://bodiedbynature.net/uploads/1/3/1/6/131636872/suzinunuzitar.pdf
    • http://eamassociation.com/uploads/1/3/0/6/130621826/vefenugozip.pdf
    • http://okalphapiphitestfiles.com/uploads/1/3/0/7/130739027/1534509.pdf
    • http://webuysinglefamilyhomes.com/uploads/1/3/0/3/130323937/68feaacb0bf.pdf
    • http://mediplexhhc.com/uploads/1/3/1/4/131408798/nemefopesa-mivej.pdf
    • http://primewebex.net/uploads/1/3/0/7/130776008/d5b06d0c1895e.pdf
    • http://referral360network.com/uploads/1/3/0/7/130775115/6d1af3.pdf
    • http://markonthemove.us/uploads/1/3/1/6/131636808/denikinegin_fixade.pdf
    • http://fertilityscoop.com/uploads/1/3/0/7/130776808/3374638.pdf
    • http://flytouchphotography.com/uploads/1/3/0/3/130313153/a05e4.pdf
    • http://endogen.com.au/uploads/1/3/0/6/130621051/2895974.pdf
    • http://careerwarriorevents.com/uploads/1/3/0/7/130739553/funozatewavat.pdf
    • http://ritaswa.com/uploads/1/3/0/9/130969259/9366671.pdf
    • http://todayscutnyc.com/uploads/1/3/0/5/130540155/391073.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066e8.bin
2f5a79968be2c78d22402f2c1f8f8b0ace83ed6925fd66c6879d2f07e034b854		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E8 11952 bytes

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